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Eagerly detect double free and sized dealloc bugs for large sizes.

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This commit is contained in:
Qi Wang 2020-10-14 16:45:19 -07:00 • committed by Qi Wang
parent be9548f2be
commit 3de19ba401
7 changed files with 136 additions and 23 deletions
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2
src/jemalloc.c
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@ -2812,7 +2812,7 @@ maybe_check_alloc_ctx(tsd_t *tsd, void *ptr, emap_alloc_ctx_t *alloc_ctx) {
&dbg_ctx);
if (alloc_ctx->szind != dbg_ctx.szind) {
safety_check_fail_sized_dealloc(
/* curent_dealloc */ true);
/* current_dealloc */ true);
return true;
}
if (alloc_ctx->slab != dbg_ctx.slab) {

4
src/tcache.c
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@ -428,6 +428,10 @@ tcache_bin_flush_impl(tsd_t *tsd, tcache_t *tcache, cache_bin_t *cache_bin,
dalloc_count++;
}
} else {
if (large_dalloc_safety_checks(edata, binind)) {
/* See the comment in isfree. */
continue;
}
large_dalloc_finish(tsdn, edata);
}
}